Eternia is a magic and mysterious world that is countless light-years from our planet Earth. His emperor, king Randor, watches over the defence of freedom and justice in his territory, besides his son, prince Adam. The prince has a secret identity: he is He-Man, the most powerful man in the universe and heroic leader that keeps the secrets of Castle Grayskull, stronghold of Good. His unbeatable power comes from the magic power of his sword, summoned when shouting "By the power of Grayskull... I have the power!".

He-Man has lots of heroic allies that fight along him against the Evil Forces leaded by the evil Skeletor.

And now, Hordak and his Evil Horde have landed Eternia to confront not only He-man, but also Skeletor, his old pupil.